MATHEMATICS COLLEGE

Determine the next step for solving the quadratic equation by completing the square. 0 = –2x2 + 2x + 3

Answers

Answer 1

Answer:

Answer:

-1/2, 1/4, 1/2 on edge

Answer 2

Answer: The next step is to divide the equation by -2

-2(x^2 - x) + 3 = 0

Related Questions

Sketch the region R defined by 1 ≤ x ≤ 2 and 0 ≤ y ≤ 1/x^3 .a. Find (exactly) the number a such that the line x = a divides R into two parts of equal area.b. Then find (to 3 decimal places) the number b such that the line y = b divides R into two parts of equal area.
Is 6.5892 a rational or irrational number
What is the prime factorization of 315?
Will mark the brainiest PLZ HELP NOW!!!!!!!!!!!!!!!9.Find the area of each of the triangle. Round to the nearest tenth. A=20 degrees, a = 19, C= 64 degrees.10. Find the area of a triangle with slides 51 inches, 38 inches, and 45 inches.
PLEASE HELP ME I NEED ITX=Y=

Find the length of the radius of the circle, which is inscribed into a right trapezoid with lengths of bases a and b.

Answers

Answer:

r = (ab)/(a+b)

Step-by-step explanation:

Consider the attached sketch. The diagram shows base b at the bottom and base a at the top. The height of the trapezoid must be twice the radius. The point where the slant side of the trapezoid is tangent to the inscribed circle divides that slant side into two parts: lengths (a-r) and (b-r). The sum of these lengths is the length of the slant side, which is the hypotenuse of a right triangle with one leg equal to 2r and the other leg equal to (b-a).

Using the Pythagorean theorem, we can write the relation ...

((a-r) +(b-r))^2 = (2r)^2 +(b -a)^2

a^2 +2ab +b^2 -4r(a+b) +4r^2 = 4r^2 +b^2 -2ab +a^2

-4r(a+b) = -4ab . . . . . . . . subtract common terms from both sides, also -2ab

r = ab/(a+b) . . . . . . . . . divide by the coefficient of r

The radius of the inscribed circle in a right trapezoid is r = ab/(a+b).

_____

The graph in the second attachment shows a trapezoid with the radius calculated as above.

The length of a rectangle is 12 m.Its width is 15 m.
Find the area and perimeter of this rectangle.

Answers

Answer:

for perimeter you add all sides. so Lenth x2 + width x2 is 24+30 which would equal 54

for area it's Lenth times width so 12 times 15 equals 156

A cylinder is 5 centimeters tall and has a radius of 2.1 centimeters. Find the volume to the nearest tenth. Use 3.14 for .61.2 cm
33.0 cm
65.9 cm
69.2 cm

Answers

Answer:

Option D

Step-by-step explanation:

Volume of a cylinder is $V=\pi r^2h$

h - height

r - radius

We are given the radius of 2.1 centimeters and the height of 5 centimeters.

Using 3.14 for pi:

$V=3.14*2.1^2*5\n\nV =69.237$

69.237 ≈ 69.2

Option D should be the correct answer.

9/10 + 9/10 + 9/10
HELP NEEDED ASAP PLSSSSSSSSS PLSSS ILL GIVE U MAX POINTS IF U HELP PLSSSSS

Answers

27/10 or 2 7/10 here hope this helped

Answer:

27/10

Step-by-step explanation:

Find the ratio of 4km to 1200m

Answers

Answer:

10 : 3

Step-by-step explanation:

4km = 4000 m

4000 : 1200 = 4000/1200 = 40/12 = 10/3 = 10 : 3

Answer:

convert 4km into meter.

1200m/4000m

3:10

A random sample of 10 subjects have weights with a standard deviation of 11.9407 kg. What is the variance of their weights? Be sure to include the appropriate units with the result. The variance of the sample data is nothing ▼ kg cubed . kg squared . kg. (Round to four decimal places as needed.)